若随机变量， 且则二维随机变量服从二维正态分布。https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/06902c8739054c2686716051f5d8b3fd.png
举一反三
- 若随机变量， 且则二维随机变量服从二维正态分布。https://image.z...86716051f5d8b3fd.png
- 若随机变量X,Y满足，则。https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/a0b66ace257a4e1a93e06690c8f2047d.png
- 若随机变量X,Y独立，则。https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/00c4d1e4a20d4a95bb7654c7eec93ac8.png
- 已知随机变量且，则参数值是（ ）。https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/371bed96f54d4512843ecd38aee0c0fd.png
- 若随机变量image.png， 且image.png则二维随机变量image.png服从二维正态分布